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Project Appraisal and Foreign Exchange Constraints: A Simple Exposition


  • Charles R. Blitzer
  • Partha Dasgupta
  • Joseph E. Stiglitz


In an earlier paper, we showed that the value of shadow prices depends on how the government contemplates re- equilibrating the economy to the perturbation associated with any project, except in the extreme case where the government has chosen all policy instruments optimally. Only under restrictive conditions will relative shadow prices for traded goods equal relative international prices. We develop here a general methodology for calculating shadow prices, which expresses the prices as a weighted average of domestic and international prices. The formulae provide the conditions under which the border price rule is valid. For instance, so long as there are non-traded goods, even if the government leaves tariffs unchanged (so that relative domestic prices of traded goods remain unchanged), unless the government completely neutralizes the induced change in domestic income, there will be changes in the prices of non-traded goods. These will preclude the use of the border price rule.

Suggested Citation

  • Charles R. Blitzer & Partha Dasgupta & Joseph E. Stiglitz, 1987. "Project Appraisal and Foreign Exchange Constraints: A Simple Exposition," NBER Working Papers 2165, National Bureau of Economic Research, Inc.
  • Handle: RePEc:nbr:nberwo:2165
    Note: PE

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